Routing Table Report 04:00 +10GMT Thu 19 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 357468
Prefixes after maximum aggregation: 161830
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176601
Total ASes present in the Internet Routing Table: 37609
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 31434
Origin ASes announcing only one prefix: 15109
Transit ASes present in the Internet Routing Table: 5096
Transit-only ASes present in the Internet Routing Table: 135
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 637
Unregistered ASNs in the Routing Table: 329
Number of 32-bit ASNs allocated by the RIRs: 1359
Number of 32-bit ASNs visible in the Routing Table: 1079
Prefixes from 32-bit ASNs in the Routing Table: 2426
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 168
Number of addresses announced to Internet: 2431399872
Equivalent to 144 /8s, 236 /16s and 55 /24s
Percentage of available address space announced: 65.6
Percentage of allocated address space announced: 65.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.9
Total number of prefixes smaller than registry allocations: 148525
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89494
Total APNIC prefixes after maximum aggregation: 29985
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85853
Unique aggregates announced from the APNIC address blocks: 36665
APNIC Region origin ASes present in the Internet Routing Table: 4454
APNIC Prefixes per ASN: 19.28
APNIC Region origin ASes announcing only one prefix: 1236
APNIC Region transit ASes present in the Internet Routing Table: 707
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 614881568
Equivalent to 36 /8s, 166 /16s and 89 /24s
Percentage of available APNIC address space announced: 78.0
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 175/8, 180/8,
182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8,
219/8, 220/8, 221/8, 222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 140362
Total ARIN prefixes after maximum aggregation: 71515
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 112577
Unique aggregates announced from the ARIN address blocks: 45589
ARIN Region origin ASes present in the Internet Routing Table: 14374
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5494
ARIN Region transit ASes present in the Internet Routing Table: 1499
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 801526016
Equivalent to 47 /8s, 198 /16s and 81 /24s
Percentage of available ARIN address space announced: 63.7
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 393216-394239
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8,
53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8,
65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8,
72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8,
98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 173/8,
174/8, 184/8, 199/8, 204/8, 205/8, 206/8, 207/8,
208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 84402
Total RIPE prefixes after maximum aggregation: 48212
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77874
Unique aggregates announced from the RIPE address blocks: 51511
RIPE Region origin ASes present in the Internet Routing Table: 15612
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7814
RIPE Region transit ASes present in the Internet Routing Table: 2459
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 801
Number of RIPE addresses announced to Internet: 472332288
Equivalent to 28 /8s, 39 /16s and 56 /24s
Percentage of available RIPE address space announced: 76.1
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
196608-198655
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8,
176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 32732
Total LACNIC prefixes after maximum aggregation: 7495
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31748
Unique aggregates announced from the LACNIC address blocks: 16730
LACNIC Region origin ASes present in the Internet Routing Table: 1455
LACNIC Prefixes per ASN: 21.82
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 264
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 215
Number of LACNIC addresses announced to Internet: 83464704
Equivalent to 4 /8s, 249 /16s and 146 /24s
Percentage of available LACNIC address space announced: 55.3
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 7838
Total AfriNIC prefixes after maximum aggregation: 1873
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 6186
Unique aggregates announced from the AfriNIC address blocks: 1903
AfriNIC Region origin ASes present in the Internet Routing Table: 449
AfriNIC Prefixes per ASN: 13.78
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 101
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23078656
Equivalent to 1 /8s, 96 /16s and 39 /24s
Percentage of available AfriNIC address space announced: 34.4
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 2454 9493 917 Korea Telecom (KIX)
17974 1834 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1554 301 86 TPG Internet Pty Ltd
4755 1470 635 169 TATA Communications formerly
24560 1146 336 184 Bharti Airtel Ltd., Telemedia
7552 1119 1064 7 Vietel Corporation
9583 1080 80 511 Sify Limited
4808 1079 2141 298 CNCGROUP IP network: China169
9829 1039 874 51 BSNL National Internet Backbo
18101 932 116 141 Reliance Infocom Ltd Internet
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3646 3822 255 bellsouth.net, inc.
4323 1979 1081 396 Time Warner Telecom
18566 1830 357 236 Covad Communications
1785 1787 681 124 PaeTec Communications, Inc.
6478 1686 314 60 AT&T Worldnet Services
20115 1535 1540 633 Charter Communications
19262 1498 4949 298 Verizon Global Networks
7018 1363 7069 893 AT&T WorldNet Services
22773 1328 2897 86 Cox Communications, Inc.
11492 1279 240 15 Cable One
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6830 520 1780 321 UPC Distribution Services
34984 512 106 182 BILISIM TELEKOM
3292 460 1998 395 TDC Tele Danmark
20940 459 134 353 Akamai Technologies European
29049 453 33 44 AzerSat LLC.
8866 443 134 26 Bulgarian Telecommunication C
12479 430 577 6 Uni2 Autonomous System
3320 422 8152 369 Deutsche Telekom AG
8551 405 355 45 Bezeq International
702 395 1802 309 UUNET - Commercial IP service
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1477 272 152 TVCABLE BOGOTA
8151 1373 2702 361 UniNet S.A. de C.V.
28573 1311 990 85 NET Servicos de Comunicao S.A
7303 931 470 150 Telecom Argentina Stet-France
6503 731 354 73 AVANTEL, S.A.
14420 667 54 91 CORPORACION NACIONAL DE TELEC
22047 556 310 15 VTR PUNTO NET S.A.
3816 521 227 100 Empresa Nacional de Telecomun
13489 508 254 118 Orbitel S.A. E.S.P.
11172 493 84 83 Servicios Alestra S.A de C.V
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 896 445 11 TEDATA
24863 784 147 37 LINKdotNET AS number
15475 415 90 8 Nile Online
36992 288 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 174 78 10 RAYA Telecom - Egypt
29571 162 17 11 Ci Telecom Autonomous system
16637 150 441 86 MTN Network Solutions
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3646 3822 255 bellsouth.net, inc.
4766 2454 9493 917 Korea Telecom (KIX)
23456 2426 625 1328 32-bit ASN transition
4323 1979 1081 396 Time Warner Telecom
17974 1834 516 32 PT TELEKOMUNIKASI INDONESIA
18566 1830 357 236 Covad Communications
1785 1787 681 124 PaeTec Communications, Inc.
6478 1686 314 60 AT&T Worldnet Services
7545 1554 301 86 TPG Internet Pty Ltd
20115 1535 1540 633 Charter Communications
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
17974 1834 1802 PT TELEKOMUNIKASI INDONESIA
1785 1787 1663 PaeTec Communications, Inc.
6478 1686 1626 AT&T Worldnet Services
18566 1830 1594 Covad Communications
4323 1979 1583 Time Warner Telecom
4766 2454 1537 Korea Telecom (KIX)
7545 1554 1468 TPG Internet Pty Ltd
10620 1477 1325 TVCABLE BOGOTA
4755 1470 1301 TATA Communications formerly
11492 1279 1264 Cable One
Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
27.0.128.0/17 7514 Media Exchange, Inc.
31.223.232.0/21 47116 RIPE Network Coordination Cen
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:12 /10:28 /11:79 /12:226
/13:461 /14:792 /15:1392 /16:11751 /17:5798 /18:9716
/19:19293 /20:25627 /21:25863 /22:34228 /23:32941 /24:185986
/25:1087 /26:1275 /27:713 /28:164 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2246 3646 bellsouth.net, inc.
18566 1790 1830 Covad Communications
6478 1640 1686 AT&T Worldnet Services
10620 1367 1477 TVCABLE BOGOTA
11492 1225 1279 Cable One
23456 1196 2426 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1052 1787 PaeTec Communications, Inc.
4323 890 1979 Time Warner Telecom
22773 846 1328 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:273 2:44 4:14 5:1 6:3 8:353
12:1989 13:1 14:458 15:15 16:3 17:8
20:10 23:7 24:1641 27:751 31:343 32:60
33:4 34:2 37:1 38:737 40:101 41:2527
42:5 44:3 46:908 47:4 49:192 50:408
52:13 55:7 56:2 57:30 58:846 59:472
60:387 61:1248 62:978 63:1936 64:3926 65:2287
66:4133 67:1865 68:1090 69:2990 70:705 71:352
72:1881 73:1 74:2351 75:309 76:342 77:869
78:690 79:453 80:1091 81:818 82:489 83:448
84:629 85:1067 86:594 87:748 88:324 89:1566
90:202 91:3754 92:515 93:1057 94:1267 95:803
96:504 97:248 98:848 99:35 101:59 103:10
106:1 107:7 108:85 109:947 110:600 111:716
112:320 113:398 114:536 115:665 116:957 117:690
118:818 119:1131 120:308 121:677 122:1622 123:1082
124:1264 125:1227 128:260 129:176 130:164 131:571
132:108 133:19 134:217 135:49 136:214 137:143
138:304 139:111 140:482 141:239 142:403 143:408
144:484 145:54 146:442 147:211 148:589 149:243
150:173 151:186 152:310 153:178 154:3 155:396
156:194 157:354 158:132 159:387 160:319 161:207
162:279 163:163 164:501 165:353 166:508 167:431
168:726 169:153 170:795 171:77 172:1 173:1564
174:551 175:372 177:114 178:911 180:844 181:16
182:443 183:206 184:267 185:1 186:1167 187:739
188:839 189:896 190:4809 192:5794 193:4847 194:3481
195:2982 196:1211 197:17 198:3585 199:3899 200:5514
201:1473 202:8365 203:8467 204:4161 205:2326 206:2728
207:2917 208:3968 209:3444 210:2738 211:1388 212:1978
213:1731 214:737 215:70 216:4837 217:1624 218:562
219:361 220:1200 221:484 222:338 223:147
End of report
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